| 摘要 |
The switch (1) has a pushrod (12) which is moved axially between two extreme positions (H0, H1). The pushrod has an intermediate position (HC) between the extreme positions. At a resting position, the mobile part (2) does not touch the pushrod. The pushrod is therefore kept in position by a spring that pushes it to an extreme closing position (H1), and current passes through electric circuit. When a part moves (F1), the mobile part touches the pushrod so as to push it down against the force of spring. When the pushrod reaches a commutation position (HC), the switch is in its opened position, and current no longer passes through the electric circuit.
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